2. quadratics

Question 1

discriminant

Answer 1

b^2 -4ac

Question 2

b^2 - 4ac > 0

Answer 2

two distinct real roots

Question 3

b^2 - 4ac < 0

Answer 3

no real roots

Question 4

b^2 - 4ac = 0

Answer 4

on real root

Question 5

complete the square of
Y= 4x^2 + 16x + 5

Answer 5

y= 4(x^2 + 4x) + 5
y= 4((x + 2x)^2 -(4)^2) +5
y=4((x + 2x)^2-16)+5
y=4(x+2x)^2-11

Question 6

quadratic formula

Answer 6

x= -b (+-) root b^2 -4ac/2a